Gage blocks on the cheap...

[randyc]

I used a green dish-scrubbing pad dipped in mineral spirits and rubbed the block with it until a white tee-shirt didn't pick up any color when wiping the block vigorously.  Yes, you're right, the stain is still there and always will be but I'm hoping it doesn't spread.

I was very fortunate because:

(1)  The rust spot was on only one of the eighty-one blocks
(2)  The rust spot was on one of the edges, not on either of the gauge surfaces

Many thanks, Ken, I appreciate your comments !